Paloalto Networks Updated Practitioner Exam Questions and Answers by macy

An AAAA record is a type of DNS record that maps a domain name or a subdomain to an IPv6 address. IPv6 is the latest version of the Internet Protocol (IP) that uses 128-bit addresses to identify devices on the internet. An AAAA record is similar to an A record, which maps a domain name or a subdomain to an IPv4 address, but with a different format and length. An example of an AAAA record is:

example-website.com. IN AAAA 2001:db8::1234

In the example above, the record is made up of the following elements:

example-website.com.: The domain name or the subdomain that is mapped to an IPv6 address.

IN: The class of the record, which indicates that it is on the internet.

AAAA: The type of the record, which indicates that it is an IPv6 address record.

2001:db8::1234: The IPv6 address that is mapped to the domain name or the subdomain. The address is written in hexadecimal notation, with colons separating each 16-bit segment. Double colons (::) can be used to compress consecutive zero segments.

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A knowledge-based system uses a database of known vulnerabilities and attack profiles

to identify intrusion attempts. These types of systems have lower false-alarm rates than

behavior-based systems but must be continually updated with new attack signatures to

be effective.

● A behavior-based system uses a baseline of normal network activity to identify unusual

patterns or levels of network activity that may be indicative of an intrusion attempt.

These types of systems are more adaptive than knowledge-based systems and therefore

may be more effective in detecting previously unknown vulnerabilities and attacks, but

they have a much higher false-positive rate than knowledge-based systems.

A TLS handshake occurs after the TCP handshake is complete. The TLS handshake is responsible for establishing a secure, encrypted session between client and server, including the negotiation of encryption algorithms and exchange of keys.

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